Blockchain-Enabled Cafeteria Token Management and Transaction System: A Permissioned DLT Approach for High-Throughput Institutional Micro-Payments

Abstract

This paper presents a novel architecture for secure, high-throughput digital token management and transaction systems tailored for closed institutional environments, specifically corporate and university cafeterias. Traditional centralized Point-of-Sale (POS) systems exhibit significant vulnerabilities, including single points of failure, limited transparency, and cumbersome auditing processes. The proposed solution implements a Permissioned Distributed Ledger Technology (DLT) framework utilizing a modified ERC-20 utility token standard and the Delegated Proof-of-Stake (DPoS) consensus mechanism. This architecture is explicitly engineered to handle high volumes of rapid micro- transactions characteristic of peak institutional demand periods. Security is reinforced through cryptographic data linkage via SHA-256 hashing and smart contracts that enforce institutional policies and prevent fraud. Empirical results from simulation demonstrate that the system achieves transaction throughput exceeding 300 transactions per second (TPS) and maintains average transaction latency below 450 milliseconds under stress testing, confirming the system's viability for real-world deployment where swift transaction finality is essential. This research establishes a validated, secure, and scalable framework for institutional automation using DLT.